Abstract: A program for a first terminal apparatus configured to participate in a teleconference causes, when executed, the first terminal apparatus to perform operations including: transmitting document data to a second terminal apparatus participating in the teleconference through a first communicator of the first terminal apparatus connected to the network, the document data corresponding to a document image to be shared with the second terminal apparatus in the teleconference; acquiring, through the first communicator, a completion notification indicating that the document data is acquired at transmission destination of the document data, the transmission destination including the second terminal apparatus; and, in response to acquiring the completion notification, transmitting a display instruction to the second terminal apparatus through the first communicator. The display instruction is an instruction to display the document image corresponding to the document data on a display of the second terminal apparatus.

Abstract: In a communication apparatus, a first portion of a shared material is displayed in a first display area within a remote conference screen which is displayed in a display connected to the communication apparatus. When the communication apparatus is in a state for receiving an input of an annotation to the shared material, a second display area is set as an area for receiving a first input. When the first input is received, a portion of the shared material displayed in the first display area is changed from the first portion to a second portion of the shared material. When a second input is received to a position outside the second display area, an annotation corresponding to the second input is displayed to be superimposed on the first portion in the first display area.

Abstract: A remote conference system includes: a communication terminal; and a conference server connected to the communication terminal via an IP network, wherein the communication terminal performs processes comprising: detecting a state of the IP network between the conference server and the communication terminal; performing first determination on whether to transmit partial media data to the conference server, based on the detected state of the IP network; performing first transmission of transmitting the partial media data to the conference server if it is determined to transmit the partial media data; performing first saving of saving the partial media data in a storage device of the communication terminal when it is determined to not transmit the partial media data; and performing second transmission of transmitting partial media data saved in the storage device, as missing partial media data, to the conference server at a predetermined timing.

Abstract: A communication device obtains video data. The video data includes a plurality of inter-frame coded image data and a plurality of intra-frame coded image data. The communication device displays a portion of a video layout region on a video display region of a display of the communication device. A plurality of captured images, reproduced from video data, is laid out in the video layout region. When a specific captured image is not included in the video display region, the communication device determines update frequency information. The update frequency information sets at least a portion of the plurality of inter-frame coded image data included in specific video data, corresponding to the specific captured image, as a non-target for transmission. The communication device transmits the update frequency information via a communication unit of the communication device.

Abstract: A server obtains video data and layout information. The layout information includes at least a portion of identification information and status information associated with each other. The status information relates to a display condition of each of a plurality of captured images in a video display region. The server judges whether a specific captured image is included in the video display region. The server determines update frequency information when the specific captured image is not included in the video display region. The update frequency information sets a portion of a plurality of inter-frame coded image data included in the video data of the second communication device as a non-target for transmission. The server transmits the video data in which the portion of the plurality of inter-frame coded image data are not included.

Abstract: Encoded data may be generated and transmitted from one computing device to another via a network. To address bandwidth use efficiency issues, an available bandwidth for the other computing device may be determined or acquired. A time at which the available bandwidth is determined/acquired may be estimated. Media data (e.g., audio, video, etc.) may be encoded for transmission. Scheduled change time, at which a setting of an encoding condition is expected to be changed, is further determined. Change timing, at which the setting of an encoding condition is to be changed, is determined on the basis of the scheduled change time and the estimated time. The setting of the encoding condition may then be changed in accordance with the available bandwidth when the change timing is reached.

Abstract: A communication device obtains video data. The video data includes a plurality of inter-frame coded image data and a plurality of intra-frame coded image data. The communication device displays a portion of a video layout region on a video display region of a display of the communication device. A plurality of captured images, reproduced from video data, is laid out in the video layout region. When a specific captured image is not included in the video display region, the communication device determines update frequency information. The update frequency information sets at least a portion of the plurality of inter-frame coded image data included in specific video data, corresponding to the specific captured image, as a non-target for transmission. The communication device transmits the update frequency information via a communication unit of the communication device.

Abstract: A server obtains video data and layout information. The layout information includes at least a portion of identification information and status information associated with each other. The status information relates to a display condition of each of a plurality of captured images in a video display region. The server judges whether a specific captured image is included in the video display region. The server determines update frequency information when the specific captured image is not included in the video display region. The update frequency information sets a portion of a plurality of inter-frame coded image data included in the video data of the second communication device as a non-target for transmission. The server transmits the video data in which the portion of the plurality of inter-frame coded image data are not included.

Abstract: A communication device capable of connecting to a network includes a switching portion that switches an operation state of the communication device to one of a measurement state and a non-measurement state within a predetermined cycle, the measurement state being a state in which an available bandwidth is measured, the non-measurement state being a state in which the available bandwidth is not measured, and the available bandwidth being a bandwidth available in the network, a first transmission portion that transmits to a partner device a plurality of measurement packets while sequentially changing transmission intervals, in a state in which the operation state has been switched to the measurement state and a second transmission portion that transmits a data packet to the partner device, using a bandwidth smaller than the available bandwidth, in a state in which the operation state has been switched to the non-measurement state.

Abstract: In a communication apparatus, a first portion of a shared material is displayed in a first display area within a remote conference screen which is displayed in a display connected to the communication apparatus. When the communication apparatus is in a state for receiving an input of an annotation to the shared material, a second display area is set as an area for receiving a first input. When the first input is received, a portion of the shared material displayed in the first display area is changed from the first portion to a second portion of the shared material. When a second input is received to a position outside the second display area, an annotation corresponding to the second input is displayed to be superimposed on the first portion in the first display area.

Abstract: A communication device transmits a plurality of measurement packets for identifying an available bandwidth to another communication device connected via a network, using bandwidths in the measurement bandwidth range. The communication device then determines whether the available bandwidth is included in the measurement bandwidth range. In a case where the available bandwidth is not included in the measurement bandwidth range, the communication device determines whether the available bandwidth is located on a narrowband side or on a wideband side with respect to the measurement bandwidth range, and determines a bandwidth shift amount based on an amount of change. The communication device updates the measurement bandwidth range by shifting one of the lower bandwidth and the upper bandwidth based on the bandwidth shift amount.

Abstract: A remote conference system includes: a communication terminal; and a conference server connected to the communication terminal via an IP network, wherein the communication terminal performs processes comprising: detecting a state of the IP network between the conference server and the communication terminal; performing first determination on whether to transmit partial media data to the conference server, based on the detected state of the IP network; performing first transmission of transmitting the partial media data to the conference server if it is determined to transmit the partial media data; performing first saving of saving the partial media data in a storage device of the communication terminal when it is determined to not transmit the partial media data; and performing second transmission of transmitting partial media data saved in the storage device, as missing partial media data, to the conference server at a predetermined timing.

Abstract: A communication device transmits a plurality of measurement packets to another communication device while successively varying a transmitting interval. After the plurality of measurement packets have been transmitted, the communication device determines a location of a usable bandwidth in relation to a first bandwidth range that is a range within which bandwidths are measured. The communication device resets the first bandwidth range to a second bandwidth range that is a range within which the bandwidths are measured and in which at least one of an upper limit and a lower limit is different from the corresponding limit in the first bandwidth range in accordance with the determination. The communication device selects a bandwidth that will be used when the measurement packets are transmitted. The communication device transmits the measurement packets to the other communication device using the bandwidth that has been selected.

Abstract: A conference control device includes: a communication processing unit which performs transmission/reception processing of conference information containing voice information and image information between the conference control device and a plurality of video conference terminal devices through a network; an information collecting unit which collects information on connection paths between the conference control device and the respective video conference terminal devices; a grouping unit which sorts the plurality of video conference terminal devices into a plurality of groups based on information on the connection paths collected by the information collecting unit; a band monitoring unit which monitors a use band of the communication processing unit in accordance with every group; and a bandwidth control unit which is, when the group having the use band of less than a predetermined value is detected by the band monitoring unit, controls the bandwidth of the video conference terminal devices belonging to the gr

Abstract: Encoded data may be generated and transmitted from one computing device to another via a network. To address bandwidth use efficiency issues, an available bandwidth for the other computing device may be determined or acquired. A time at which the available bandwidth is determined/acquired may be estimated. Media data (e.g., audio, video, etc.) may be encoded for transmission. Scheduled change time, at which a setting of an encoding condition is expected to be changed, is further determined. Change timing, at which the setting of an encoding condition is to be changed, is determined on the basis of the scheduled change time and the estimated time. The setting of the encoding condition may then be changed in accordance with the available bandwidth when the change timing is reached.

Abstract: A communication device capable of connecting to a network includes a switching portion that switches an operation state of the communication device to one of a measurement state and a non-measurement state within a predetermined cycle, the measurement state being a state in which an available bandwidth is measured, the non-measurement state being a state in which the available bandwidth is not measured, and the available bandwidth being a bandwidth available in the network, a first transmission portion that transmits to a partner device a plurality of measurement packets while sequentially changing transmission intervals, in a state in which the operation state has been switched to the measurement state and a second transmission portion that transmits a data packet to the partner device, using a bandwidth smaller than the available bandwidth, in a state in which the operation state has been switched to the non-measurement state.

Abstract: A communication device transmits a plurality of measurement packets for identifying an available bandwidth to another communication device connected via a network, using bandwidths in the measurement bandwidth range. The communication device then determines whether the available bandwidth is included in the measurement bandwidth range. In a case where the available bandwidth is not included in the measurement bandwidth range, the communication device determines whether the available bandwidth is located on a narrowband side or on a wideband side with respect to the measurement bandwidth range, and determines a bandwidth shift amount based on an amount of change. The communication device updates the measurement bandwidth range by shifting one of the lower bandwidth and the upper bandwidth based on the bandwidth shift amount.

Abstract: A communication device transmits a plurality of measurement packets to another communication device while successively varying a transmitting interval. After the plurality of measurement packets have been transmitted, the communication device determines a location of a usable bandwidth in relation to a first bandwidth range that is a range within which bandwidths are measured. The communication device resets the first bandwidth range to a second bandwidth range that is a range within which the bandwidths are measured and in which at least one of an upper limit and a lower limit is different from the corresponding limit in the first bandwidth range in accordance with the determination. The communication device selects a bandwidth that will be used when the measurement packets are transmitted. The communication device transmits the measurement packets to the other communication device using the bandwidth that has been selected.

Abstract: A conference control device includes: a communication processing unit which performs transmission/reception processing of conference information containing voice information and image information between the conference control device and a plurality of video conference terminal devices through a network; an information collecting unit which collects information on connection paths between the conference control device and the respective video conference terminal devices; a grouping unit which sorts the plurality of video conference terminal devices into a plurality of groups based on information on the connection paths collected by the information collecting unit; a band monitoring unit which monitors a use band of the communication processing unit in accordance with every group; and a bandwidth control unit which is, when the group having the use band of less than a predetermined value is detected by the band monitoring unit, controls the bandwidth of the video conference terminal devices belonging to the gr